Small 3mm to 4mm D Knob for Honda Rebel Odometer

Ok, this is a quick little thing, but my Honda Rebel's speedometer is missing the odometer knob. I've been meaning to print one since about when I bought the bike, but kept forgetting to do it. Today I had the bike near the printer and remembered!

The picture shows what the stem looks like inside the speedometer.

It's tiny so I used lots of outer layers and infill at .2mm layer height. Printed in ABS. On it's nose it doesn't need supports.

The error in my printer made the spot for t